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(深圳市華陽國際工程設(shè)計(jì)股份有限公司, 深圳 518045)
摘要: 昆明某連體天幕為高烈度區(qū)連接超高層塔樓及商業(yè)裙房的大跨度連體鋼桁架,其中塔樓采用鋼筋混凝土框架-剪力墻結(jié)構(gòu)體系,商業(yè)裙房采用鋼筋混凝土框架結(jié)構(gòu)體系. 對連體桁架與主體結(jié)構(gòu)不同連接方式進(jìn)行了對比,發(fā)現(xiàn)采用摩擦擺滑動支座進(jìn)行連接可顯著減小對塔樓相關(guān)構(gòu)件內(nèi)力的影響. 對結(jié)構(gòu)進(jìn)行了彈性分析和非線性屈曲穩(wěn)定分析,對關(guān)鍵節(jié)點(diǎn)采用性能化分析方法. 同時,通過大震彈塑性分析,支座最大滑動量滿足其性能要求,并針對結(jié)構(gòu)薄弱環(huán)節(jié)進(jìn)行加強(qiáng). 對關(guān)鍵節(jié)點(diǎn)進(jìn)行了有限元分析,驗(yàn)證了節(jié)點(diǎn)的可靠性,計(jì)算結(jié)果均滿足結(jié)構(gòu)安全性要求.
關(guān)鍵詞: 大跨鋼結(jié)構(gòu); 連體天幕; 摩擦擺; 多尺度法; 性能化分析方法
中圖分類號:TU318 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2022)03-0038-05
DOI:10. 19701 / j. jzjg. LS201848
Steel structure design for a large-span conjoined sky curtain in Kunming
LI Wenbin
( Shenzhen Capol International & Associates Co., Ltd., Shenzhen 518045, China)
Abstract: A conjoined sky curtain in Kunming is a large-span conjoined steel truss connecting a super high-rise tower anda commercial podium in a high-intensity area. The tower adopts a reinforced concrete frame-shear wall structural system,and the commercial podium adopts a reinforced concrete frame structural system. The different connection methods of theconnected truss and the main structure were compared, and it was found that the friction pendulum sliding bearing was usedfor connection, which can significantly reduce the influence on the internal force of the related components of the tower.The elastic analysis and nonlinear buckling stability analysis of the structure were carried out, and the performance analysismethod was adopted for the key nodes. At the same time, through the elastoplastic analysis of large earthquakes, themaximum sliding amount of the bearing meets its performance requirements, and the weak links of the structure werestrengthened. The finite element analysis of the key nodes had been carried out to verify the reliability of the nodes, and thecalculation results meet the structural safety requirements.
Keywords:large-span steel structure; conjoined sky curtain; friction pendulum; multiscale method; performance analysismethod
第一作者:李文斌,學(xué)士,高級工程師,一級注冊結(jié)構(gòu)工程師,從事建筑結(jié)構(gòu)設(shè)計(jì)研究,Email:liwenbin@ capol. cn.
[引用本文] 李文斌. 昆明某大跨連體天幕鋼結(jié)構(gòu)設(shè)計(jì) [ J] . 建筑結(jié) 構(gòu),2022,52 ( 3) :38-42. LI Wenbin. Steelstructure design for a large-span conjoined sky curtain in Kunming[ J] . Building Structure,2022,52(3) :38-42.
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